CN210715635U

CN210715635U - Dust cover and TPE adapter sleeve thereof

Info

Publication number: CN210715635U
Application number: CN201921579594.0U
Authority: CN
Inventors: 徐正勇
Original assignee: Zhejiang Dingfu Rubber Plastic Technology Co Ltd
Current assignee: Zhejiang Dingfu Rubber Plastic Technology Co Ltd
Priority date: 2019-09-21
Filing date: 2019-09-21
Publication date: 2020-06-09
Anticipated expiration: 2029-09-21

Abstract

The utility model discloses a dust cover and TPE adapter sleeve thereof relates to the automobile parts field, and the technical scheme main points of TPE adapter sleeve are: including the annular cover body, the lateral wall of the cover body is the face of cylinder setting, and the inside wall of the axial one end of the cover body is provided with the tight ring that supports, supports the tight ring and is close to the cover body direction setting and is used for the conflict cover body, supports the terminal surface that the tight ring kept away from the cover body and is provided with the conflict piece, and the conflict piece quantity and the position all correspond the slide rail setting of bell shell, and the conflict piece is used for restricting the bearing in the bell shell and deviate from. Through setting up the piece of contradicting, the conflict of the piece of contradicting is spacing, can reduce the condition that the critical value was kept away from each other to tripod and bell shell to the bearing that has reduced the tripod is deviate from in the slide rail, makes the dust cover have the function of anticreep, also makes the use of transmission structure more lasting stable.

Description

Dust cover and TPE adapter sleeve thereof

Technical Field

The utility model relates to an automobile parts field, more specifically say, it relates to a dust cover and TPE adapter sleeve thereof.

Background

The automobile ball cage, namely the constant velocity universal joint, is connected to a transmission shaft of a vehicle and has the function of transmitting the power of an engine from a transmission to a driving wheel to drive a car to run at high speed. Tripod constant velocity joints are formed using three bearings with needle rollers to form a tripod, which bearings can slide in three tracks in a bell housing, the outer side wall of the bell housing of the tripod usually being provided with grooves. When the tripod type constant velocity universal joint is used, the tripod can slide inwards and outwards, so that the length change of the driving shaft generated when the vehicle moves is accommodated.

The dust cover is mainly covered on one side of the opening of the bell-shaped shell, so that the tripod, the bearing of the bell-shaped shell and the track are isolated from the outside, and two ends of the dust cover are respectively fixed on the outer side of the bell-shaped shell and the shaft of the tripod through the hoops, thereby preventing external sand and stone impurities from entering the bell-shaped shell to influence the use of the constant velocity universal joint. The dust cover generally comprises a bellows-type cover body and a TPE (thermoplastic elastomer) connecting sleeve which is embedded in one end of the cover body close to the bell-shaped shell and used for covering the bell-shaped shell, wherein the cover body and the TPE connecting sleeve are generally made of TPE (thermoplastic elastomer).

For example, the patent of the invention of chinese patent CN105508450A discloses a TPE connecting sleeve used with a 7-trough CVJ dust cover, the TPE connecting sleeve is nested in a large opening end of the CVJ dust cover and used in cooperation with the large opening end, the TPE connecting sleeve is circular, the inner wall of the TPE connecting sleeve includes three convex arcs with the same shape and size and arranged at uniform intervals, smooth arcs are arranged between the convex arcs, the inner wall is provided with a first convex rib and a third convex rib, a second convex rib is further arranged between the first convex rib and the third convex rib on the convex arcs, the front end face of the TPE connecting sleeve is provided with an inner extended edge, and the outer wall of the TPE connecting sleeve is provided with a clamping groove clamped with the CVJ dust cover.

When the tripod and the bell housing swing away from each other to a critical value, the bearing of the tripod may be disengaged from the slide rail of the bell housing, thereby causing the failure of the transmission structure. When adopting above-mentioned TPE adapter sleeve, the TPE adapter sleeve mainly realizes that fixed connection is leading, can not restrict the bearing and break away from in the slide rail, does not possess the anticreep function to influence transmission structure's life, remain to improve.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a TPE adapter sleeve of dust cover, its advantage that has the anticreep function.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a TPE adapter sleeve of dust cover, includes the annular cover body, the lateral wall of the cover body is the face of cylinder setting, the inside wall of the axial one end of the cover body is provided with the support ring, support the ring and be close to the setting of cover body direction and be used for the cover body of contradicting, the terminal surface that the cover body was kept away from to the support ring is provided with the piece of contradicting, the piece of contradicting quantity and position all correspond the slide rail setting of bell-shaped shell, the piece of contradicting is used for restricting the interior bearing of bell.

Through the technical scheme, after the TPE adapter sleeve was embedded into the cover body of dust cover, conflict piece is packed into towards the direction that deviates from the cover body, the dust cover is when covering on the bell shell this moment, conflict piece can correspond in the slide rail of embedding bell shell, thereby it is spacing to conflict the bearing of tripod in the slide rail, reduce the condition that tripod and bell shell kept away from the critical value each other, thereby the bearing that has reduced the tripod is deviate from in the slide rail, make the dust cover have the function of anticreep, thereby make transmission structure's use more permanent.

Further, conflict piece includes the conflict piece that two intervals set up, and when the dust cover was connected on the bell-shaped shell, two conflict pieces of conflict piece correspond and imbed the slide rail, and two conflict pieces are close to the slide rail and set up the bearing that is used for restricting the three ball round pins along the both ends of cover body circumference and break away from.

Through above-mentioned technical scheme, two conflict pieces can be located the slide rail to close the both ends of set body along circumference, conflict piece this moment mainly supports the both sides position of tight bearing, thereby restriction three balls round pin and bell shell keep away from the condition of critical value each other, the conflict effect of both sides has reduced the interference to the slippage of bearing itself, only just can carry on spacingly when being close the criticality, makes whole use more convenient.

Furthermore, the end, deviating from the contact block, of the abutting ring is provided with a plurality of reinforcing blocks, and the number and the positions of the reinforcing blocks are arranged in one-to-one correspondence with the contact blocks.

Through above-mentioned technical scheme, the lateral wall of boss is contradicted and is covered the body inside wall and further fix a position, has also reduced and has contradicted the condition that leads to propping the tight ring and take place bending deformation when the piece atress to make holistic use more lasting stable. In addition, the anti-falling force of the abutting block can be adjusted by adjusting the area and the thickness of the abutting block, and the anti-falling effect is better. Set up the boss, the boss can strengthen the structural strength who supports the conflict piece department of tight ring for the anticreep effect of conflict piece is better.

Furthermore, a plurality of through grooves are formed in the circumferential inner side wall of the abutting ring, the through grooves axially penetrate through the abutting ring along the sleeve body, and the through grooves are arranged corresponding to the guide rails of the bell-shaped shell; every it corresponds along the both ends of cover body circumference to lead to the groove and is formed with the installation department that is used for supplying conflict piece fixed.

Through above-mentioned technical scheme, set up logical groove, logical groove can further reduce and support the interference that the tight ring slided to the bearing for the swing of sliding of tripod constant velocity universal joint is more convenient.

Furthermore, the outer side wall of the sleeve body is provided with a convex ring, and the convex ring is used for being correspondingly embedded with the cover body for positioning.

Through above-mentioned technical scheme, set up the bulge loop, the bulge loop is used for carrying out the gomphosis location with the caulking groove of the cover body to make the TPE adapter sleeve more stable with the dust cover structure that the concatenation of the cover body formed.

Furthermore, the bulge loop is provided with two along set body axial, the locating ring groove has still been seted up to the lateral wall of the cover body, the locating ring groove is located two between the bulge loop.

Through above-mentioned technical scheme, the bulge loop sets up two for the structure of dust cover is more stable, sets up the positioning ring groove simultaneously, and when the TPE adapter sleeve was nested in the internal dust cover that forms of cover, the dust cover still need cramp in the lateral wall of bell-shaped shell through the clamp, and the clamp can set up along the positioning ring groove this moment, makes the location installation of clamp more convenient.

Furthermore, a protruding arc is arranged on the inner side wall of the sleeve body along the circumferential direction and corresponds to the groove of the bell-shaped shell.

Through above-mentioned technical scheme, set up protruding arc, protruding arc can carry out location fit with the recess of bell shell for the dust cover is more stable with being connected of bell shell.

Furthermore, the inside wall of the cover body is provided with a plurality of reinforcing ribs, the reinforcing ribs are correspondingly connected to the two sides of the protruding arc along the circumferential direction of the cover body, and the reinforcing ribs correspond to the positioning ring grooves.

Through above-mentioned technical scheme, the structure of the cover body can be strengthened to the strengthening rib for TPE connecting sleeve structure is more stable.

Furthermore, a plurality of blind holes are further formed in one end, close to the cover body, of the cover body, and the blind holes are arranged corresponding to the positions of the convex arcs.

Through above-mentioned technical scheme, weight reduction saves the cost, also can reduce local material simultaneously and lead to the fact the shrink inequality to arouse product deformation for the production of product is more stable.

A dust cover comprises the TPE connecting sleeve.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) through the arrangement of the contact part and the contact limit of the contact part, the situation that the tripod ball and the bell-shaped shell are far away from a critical value can be reduced, so that the bearing of the tripod ball is prevented from coming off from the slide rail, the dust cover has an anti-falling function, and the use of the transmission structure is more durable and stable;

(2) through setting up the boss, the boss can strengthen the structural strength who supports the conflict piece department of tight ring, and the lateral wall conflict slide rail of boss is further fixed a position simultaneously, has also reduced and has led to supporting the circumstances that tight ring takes place bending deformation when conflicting the piece atress to make holistic use more lasting stable.

Drawings

FIG. 1 is a general schematic view of a first embodiment;

FIG. 2 is a schematic cross-sectional view of the first embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic overall view of another perspective of the first embodiment, showing the positions of the reinforcing blocks;

fig. 5 is a schematic structural diagram of the second embodiment.

Reference numerals: 1. a sleeve body; 2. a convex ring; 3. a positioning ring groove; 4. a tightening ring; 5. a contact member; 51. a contact block; 6. a reinforcing block; 7. a through groove; 8. an installation part; 9. carrying out convex arc forming; 10. reinforcing ribs; 11. and (4) blind holes.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

The first embodiment is as follows:

a TPE connecting sleeve of a dust cover is shown in figures 1 and 3 and comprises an annular sleeve body 1, and the outer side wall of the sleeve body 1 is arranged in a cylindrical surface mode. The outer side wall of the sleeve body 1 is provided with two convex rings 2, and the number of the convex rings 2 is two along the axial direction of the sleeve body 1. The outer side wall of the sleeve body 1 is also provided with a positioning ring groove 3, and the positioning ring groove 3 is positioned between the two convex rings 2. When the TPE adapter sleeve is nested in the cover internal time, bulge loop 2 is used for fixing a position with the caulking groove gomphosis that the cover body corresponds, TPE adapter sleeve is nested when covering internal formation dust cover simultaneously, the dust cover still need cramp in the lateral wall of bell-shaped shell through the clamp, the lateral wall of the cover body corresponds the annular that has 3 correspondences of positioning ring groove usually, the clamp can set up along positioning ring groove 3 this moment, cramp the annular and the 3 departments of positioning ring groove of the cover body through the clamp, make the dust cover more convenient with the location installation of bell-shaped shell.

The inside wall of the axial one end of the cover body 1 is provided with a supporting ring 4, and when the TPE connecting sleeve is nested on the cover body, the supporting ring 4 is arranged close to the cover body direction and used for abutting against the cover body. The end face, far away from the cover body, of the abutting ring 4 is provided with an abutting part 5, the number and the positions of the abutting parts 5 are all arranged corresponding to the sliding rails of the bell-shaped shell, and the abutting part 5 is used for limiting the bearing in the bell-shaped shell to be disengaged. The TPE connecting sleeve in this embodiment is mainly used for the tripod constant velocity universal joint, so the number of the abutting pieces 5 is three, and the three abutting pieces 5 are circumferentially and uniformly distributed along the sleeve body 1 and are arranged corresponding to the slide rail positions, so that the three abutting pieces 5 can be correspondingly embedded into the slide rail of the bell housing for limitation, and the disengagement of the bearing of the tripod is limited.

As shown in fig. 1 and fig. 2, the abutting part 5 includes two abutting blocks 51 arranged at intervals, in this embodiment, six abutting blocks 51 are provided, and the six abutting blocks 51 are uniformly arranged along the circumferential direction of the cover body. When the dust cover is connected to the bell housing, the two contact blocks 51 of the contact unit 5 are correspondingly embedded into the slide rail, and the two contact blocks 51 are close to the slide rail and are provided with bearings for limiting the separation of the three-ball pin along the two circumferential ends of the sleeve body 1.

As shown in fig. 3 and 4, one end of the abutting ring 4, which is away from the abutting block 51, is provided with a plurality of reinforcing blocks 6, and the number and the positions of the reinforcing blocks 6 are all arranged in one-to-one correspondence with the abutting blocks 51. The boss 6 can strengthen the structural strength that supports ring 4 and be equipped with to touch multitouch 51 department, in addition when the TPE adapter sleeve corresponds nested in the cover internal time, boss 6 keeps away from the terminal surface of the 1 axis of cover body and is used for the inside wall of the cover body of contradicting, and boss 6 strengthens the location through contradicting this moment, has reduced and has leaded to supporting ring 4 to take place the circumstances of bending deformation when contradicting piece 51 atress.

As shown in fig. 1, the abutting ring 4 is provided with a plurality of through grooves 7 along the circumferential inner side wall, the through grooves 7 axially penetrate through the abutting ring 4 along the sleeve body 1, and the through grooves 7 are arranged corresponding to the guide rails of the bell housing. The through groove 7 can further reduce the interference of the abutting ring 4 on the sliding of the bearing, so that the sliding and swinging of the tripod constant velocity universal joint are more convenient. Every logical groove 7 corresponds along the both ends of the cover body 1 circumference and is formed with installation department 8, and it all corresponds fixed connection in installation department 8 setting to support touch multitouch 51 and boss 6.

As shown in fig. 2 and 4, a convex arc 9 is fixed on the inner side wall of the sleeve body 1 along the circumferential direction. The TPE connecting sleeve of this embodiment sets up to tripod constant velocity universal joint, so protruding arc 9 evenly has three respectively along circumference, and the axis of every protruding arc 9 and the axis parallel arrangement of cover body 1, and protruding arc 9 position corresponds the recess setting of bell housing. When the TPE connecting sleeve is connected with the cover body and then sleeved with the bell-shaped shell, the convex arc 9 can be correspondingly embedded into the groove of the bell-shaped shell for positioning.

The inside wall of the cover body 1 is also fixed with a plurality of reinforcing ribs 10, the reinforcing ribs 10 are correspondingly connected to the two sides of the raised arc 9 along the circumferential direction of the cover body 1, and the reinforcing ribs 10 are arranged corresponding to the positioning ring grooves 3. The cover body 1 is provided with a plurality of blind holes 11 at one end close to the cover body, and the blind holes 11 are arranged corresponding to the positions of the convex arcs 9. Every protruding arc 9 corresponds three blind hole 11 in this embodiment, through setting up blind hole 11, both weight reduction saves the cost, also can reduce local material simultaneously and lead to the fact the shrink inequality to arouse the product to warp for the dust cover that the TPE adapter sleeve is constituteed is connected more stably with tripod constant velocity universal joint.

Example two:

the difference with embodiment one lies in the structure of beaded finish is different, as shown in fig. 5, one side that set body 1 axis was kept away from to boss 6 outwards extends to the lateral wall setting that is close to set body 1, and this embodiment is fixed in simultaneously through boss 6 and supports the one end that tight ring 4 and installation department 8 deviate from contact block 51 to make the structural strength of tight ring 4 and installation department 8 better, thereby make contact block 51's spacing effect more stable. In actual use, the area and thickness of the reinforcing block 6 can be adjusted according to the requirement of the anti-falling force of the contact block 51.

Example three:

a dust cover comprises a cover body and the TPE connecting sleeve embedded at one end of the cover body with the larger diameter.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a TPE adapter sleeve of dust cover, includes annular cover body (1), the lateral wall of the cover body (1) is face setting, its characterized in that: the utility model discloses a bell-shaped shell's structure, including cover body (1), cover body and position, the inside wall of the axial one end of the cover body (1) is provided with to tight ring (4), to tight ring (4) be close to the cover body direction setting and be used for the conflict cover body, the terminal surface that the cover body was kept away from to tight ring (4) is provided with to touch piece (5), touch piece (5) quantity and position all correspond the slide rail setting of bell-shaped shell, touch piece (5) are used for restricting the bearing in the.

2. The TPE connecting sleeve of a dust cover according to claim 1, characterized in that: the contact piece (5) comprises two contact blocks (51) arranged at intervals, when the dust cover is connected to the bell-shaped shell, the two contact blocks (51) of the contact piece (5) are correspondingly embedded into the sliding rail, and the two contact blocks (51) are close to the sliding rail and are arranged at two ends along the circumferential direction of the sleeve body (1) to limit the bearing of the three-ball pin to be separated.

3. The TPE connecting sleeve of a dust cover according to claim 2, characterized in that: one end of the abutting ring (4) deviating from the abutting block (51) is provided with a plurality of reinforcing blocks (6), and the number and the positions of the reinforcing blocks (6) are all in one-to-one correspondence with the abutting blocks (51).

4. The TPE connecting sleeve of a dust cover according to claim 3, characterized in that: the abutting ring (4) is provided with a plurality of through grooves (7) along the circumferential inner side wall, the through grooves (7) axially penetrate through the abutting ring (4) along the sleeve body (1), and the through grooves (7) are arranged corresponding to the guide rails of the bell-shaped shell; each through groove (7) is correspondingly formed with an installation part (8) used for fixing the collision block (51) along two circumferential ends of the sleeve body (1).

5. The TPE connecting sleeve of a dust cover according to claim 1, characterized in that: the outer side wall of the sleeve body (1) is provided with a convex ring (2), and the convex ring (2) is used for being correspondingly embedded with the cover body to be positioned.

6. The TPE connecting sleeve of a dust cover according to claim 5, characterized in that: protruding ring (2) are provided with two along the cover body (1) axial, set annular groove (3) have still been seted up to the lateral wall of the cover body (1), set annular groove (3) are located two between protruding ring (2).

7. The TPE connecting sleeve of a dust cover according to claim 6, characterized in that: the inner side wall of the sleeve body (1) is provided with a convex arc (9) along the circumferential direction, and the convex arc (9) is arranged corresponding to the groove of the bell-shaped shell.

8. The TPE connecting sleeve of a dust cover according to claim 7, characterized in that: the inside wall of the cover body (1) is provided with a plurality of reinforcing ribs (10), the reinforcing ribs (10) are correspondingly connected to the two sides of the protruding arc (9) along the circumferential direction of the cover body (1), and the reinforcing ribs (10) correspond to the position of the positioning ring groove (3).

9. The TPE connecting sleeve of a dust cover according to claim 7, characterized in that: a plurality of blind holes (11) are further formed in one end, close to the cover body, of the cover body (1), and the blind holes (11) are arranged corresponding to the positions of the protruding arcs (9).

10. A dust cover, its characterized in that: comprising a TPE connecting sleeve according to any one of claims 1-9.